Ive always wanted one and now i think the time has come. I started setting up a tank last night, 20gal tall alittle over half land and the rest water with acrylic seperator that i sealed in it. Im gonna make a waterfall out of some bark and an old aquarium pump and put some sponges near pump to clean the water alittle, can i use carbon too? wouldnt think that would hurt any... But anywho mainly wanted to throw up some pics and see if this idea is good or not lol... Tis a really small pump im using so water will movevery slow and gonna use fish tank gravel on water side so i can take more and more out as it grows. Any feedback would be greatly appreciated!